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What is a Diesel Particulate Filter?
A diesel particulate filter (DPF) is an essential component in diesel cars, designed to capture and store soot particles from the exhaust system. This technology was introduced to address the increasing concern over vehicle emissions and their impact on the environment. In 2009, Euro 5 exhaust emissions legislation mandated the use of DPFs in all new diesel vehicles, although many manufacturers had already begun incorporating them prior to this regulation.
The primary function of a DPF is to reduce the harmful emissions released into the atmosphere, contributing to a cleaner environment. However, the capacity of a DPF is limited, meaning that the trapped soot must be regularly removed or burned off through a process known as regeneration. During regeneration, the soot is converted into ash, which takes up significantly less space within the filter.
This process not only reduces harmful exhaust emissions but also prevents the DPF from becoming blocked, which can lead to costly repairs and reduced vehicle performance.
DPF Regeneration
Your DPF (diesel particulate filter) captures and stores soot from your exhaust, which is crucial for reducing emissions in a diesel vehicle. This is to reduce the emissions of diesel vehicles. However, they have a finite capacity which means the trapped excess soot must be burned off. This process is called REGENERATION.
This allows the soot to be burnt, leaving ash, similar to the principle with a log fire. If you imagine the logs as soot, if you get the fire nice and hot, it will burn all the wood and leave just ash, which takes up a lot less space in the fire than the wood. It’s the same in your DPF; the filter regenerates, reducing the soot content down to ash.
Regular DPF Maintenance
Regular DPF cleaning and maintenance are crucial for ensuring the efficiency and longevity of your diesel vehicle’s exhaust system. Without proper care, the DPF can become clogged, triggering the dpf warning light on your dashboard and potentially putting your car into limp mode, making it unusable until the issue is resolved.
For many reasons, the filter may not regenerate when it should. If it becomes clogged or a fault develops, an orange light may appear on your dashboard (in some instances you’ll need a vehicle diagnostic run on your vehicle to find out). The problem must be addresses as soon as possible. If left, your vehicle’s performance will greatly reduce and sometimes puts it in limp mode. Your vehicle could become unusable until the filter is fixed.
At A.M. Engineering, we can carry out a professional DPF cleaning service at our garage. As TerraClean specialists, our team can resolve your issue. We are regularly trained to ensure we are highly competent in resolving your problem. Regular DPF clean services are essential to maintain the efficiency and longevity of your vehicle’s exhaust system.
For many reasons, diesel particulate filters may not regenerate when they should.
A fault with the vehicle can trigger the dpf warning light
High ash content
High additive content
Criteria not met for example not enough fuel in the tank
Frequent short journeys can lead to a blocked dpf
There is always a reason for a failed regeneration, a good healthy DPF should regenerate on its own until the filter is full of ash at which point the only way to clean it is to remove it and clean it off the vehicle.
If there has been a fault or frequent short journeys and the issue is soot build up once we have rectified the fault, we can clean your filter on the vehicle with our patented Terraclean cleaning solution.
If the filter is full of ash or spent additive the filter will need to be removed and cleaned in our specialist DPF cleaning machine, we can clean filters off pretty much anything, cars, vans, HGVs, plant. Having your DPF cleaned by our DPF specialists ensures that it is restored to its optimal condition, preventing further issues. We also offer DPF cleaning services for local garages, providing a convenient pickup service to support nearby automotive repair shops.
If you’re having issues or want to know more don’t hesitate to contact us our friendly staff will do their best to recommend the best and most cost effective repair for you.
Here's some more info on Diesel Particulate Filters DPFs
A diesel particulate filter (DPF) sits in your vehicles exhaust system. It captures soot particles to reduce the release of harmful emissions. In 2009, it became a legal requirement for vehicle manufacturers to diesel particulate filters on all vehicles although many fit them before 2009.
DPFs go through a self-clean called regeneration. However, for many reasons, it doesn’t t always regenerate when it should. When your filter starts to fill up, a warning light will appear on your dash. If left unaddressed, your vehicle may go into limp mode and become unusable.
Questions? You’re covered.
Generally, every 70,000-120,000 miles, depending on usage patterns and manufacturer recommendations.
Typically 2-4 hours, depending on the level of blockage and size of the filter.
Yes, a clogged DPF can lead to reduced performance, increased fuel consumption, and potential engine damage if left untreated.
Professional cleaning is often more cost-effective than replacement and can restore your DPF to near-original condition in most cases.
Common signs include:
- Decreased engine performance
- Increased fuel consumption
- Warning lights on dashboard
- Reduced acceleration
- Strange engine sounds
- Poor fuel economy
Common signs include:
- Decreased engine performance
- Increased fuel consumption
- Warning lights on dashboard
- Reduced acceleration
- Strange engine sounds
- Poor fuel economy
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